4 files changed, 67 insertions, 24 deletions
diff --git a/src/afl-fuzz-init.c b/src/afl-fuzz-init.c
index 5e4f1585..faa45a4e 100644
--- a/src/afl-fuzz-init.c
+++ b/src/afl-fuzz-init.c
@@ -881,11 +881,7 @@ void perform_dry_run(afl_state_t *afl) {
 
     u32 read_len = MIN(q->len, (u32)MAX_FILE);
     use_mem = afl_realloc(AFL_BUF_PARAM(in), read_len);
-    if (read(fd, use_mem, read_len) != (ssize_t)read_len) {
-
-      FATAL("Short read from '%s'", q->fname);
-
-    }
+    ck_read(fd, use_mem, read_len, q->fname);
 
     close(fd);
 
@@ -1350,6 +1346,12 @@ void pivot_inputs(afl_state_t *afl) {
 
     if (q->passed_det) { mark_as_det_done(afl, q); }
 
+    if (afl->custom_mutators_count) {
+
+      run_afl_custom_queue_new_entry(afl, q, q->fname, NULL);
+
+    }
+
     ++id;
 
   }
diff --git a/src/afl-fuzz-mutators.c b/src/afl-fuzz-mutators.c
index 79a47744..5332b9fe 100644
--- a/src/afl-fuzz-mutators.c
+++ b/src/afl-fuzz-mutators.c
@@ -31,6 +31,45 @@ struct custom_mutator *load_custom_mutator(afl_state_t *, const char *);
 struct custom_mutator *load_custom_mutator_py(afl_state_t *, char *);
 #endif
 
+void run_afl_custom_queue_new_entry(afl_state_t *afl, struct queue_entry *q,
+                                    u8 *fname, u8 *mother_fname) {
+
+  if (afl->custom_mutators_count) {
+
+    u8 updated = 0;
+
+    LIST_FOREACH(&afl->custom_mutator_list, struct custom_mutator, {
+
+      if (el->afl_custom_queue_new_entry) {
+
+        if (el->afl_custom_queue_new_entry(el->data, fname, mother_fname)) {
+
+          updated = 1;
+
+        }
+
+      }
+
+    });
+
+    if (updated) {
+
+      struct stat st;
+      if (stat(fname, &st)) { PFATAL("File %s is gone!", fname); }
+      if (!st.st_size) {
+
+        FATAL("File %s became empty in custom mutator!", fname);
+
+      }
+
+      q->len = st.st_size;
+
+    }
+
+  }
+
+}
+
 void setup_custom_mutators(afl_state_t *afl) {
 
   /* Try mutator library first */
diff --git a/src/afl-fuzz-python.c b/src/afl-fuzz-python.c
index 3aa97635..bb4eabcc 100644
--- a/src/afl-fuzz-python.c
+++ b/src/afl-fuzz-python.c
@@ -813,8 +813,8 @@ u8 queue_get_py(void *py_mutator, const u8 *filename) {
 
 }
 
-void queue_new_entry_py(void *py_mutator, const u8 *filename_new_queue,
-                        const u8 *filename_orig_queue) {
+u8 queue_new_entry_py(void *py_mutator, const u8 *filename_new_queue,
+                      const u8 *filename_orig_queue) {
 
   PyObject *py_args, *py_value;
 
@@ -861,7 +861,21 @@ void queue_new_entry_py(void *py_mutator, const u8 *filename_new_queue,
       py_args);
   Py_DECREF(py_args);
 
-  if (py_value == NULL) {
+  if (py_value != NULL) {
+
+    int ret = PyObject_IsTrue(py_value);
+    Py_DECREF(py_value);
+
+    if (ret == -1) {
+
+      PyErr_Print();
+      FATAL("Failed to convert return value");
+
+    }
+
+    return (u8)ret & 0xFF;
+
+  } else {
 
     PyErr_Print();
     FATAL("Call failed");
diff --git a/src/afl-fuzz-queue.c b/src/afl-fuzz-queue.c
index b759532c..16af2c6b 100644
--- a/src/afl-fuzz-queue.c
+++ b/src/afl-fuzz-queue.c
@@ -474,24 +474,12 @@ void add_to_queue(afl_state_t *afl, u8 *fname, u32 len, u8 passed_det) {
 
   if (afl->custom_mutators_count) {
 
-    LIST_FOREACH(&afl->custom_mutator_list, struct custom_mutator, {
+    /* At the initialization stage, queue_cur is NULL */
+    if (afl->queue_cur && !afl->syncing_party) {
 
-      if (el->afl_custom_queue_new_entry) {
+      run_afl_custom_queue_new_entry(afl, q, fname, afl->queue_cur->fname);
 
-        u8 *fname_orig = NULL;
-
-        /* At the initialization stage, queue_cur is NULL */
-        if (afl->queue_cur && !afl->syncing_party) {
-
-          fname_orig = afl->queue_cur->fname;
-
-        }
-
-        el->afl_custom_queue_new_entry(el->data, fname, fname_orig);
-
-      }
-
-    });
+    }
 
   }